Clamp for plow-beams



(No Model.)

J. A. MONEAL. I

CLAMP FOR PLOW BEAMS.

. No. 253,407. Patented Feb. 7,1882.

jzziiifneaweaz Z JFQR/en/ 0?" )FW W M UNITED STATES PATENT OFFICE.

CLAMP FOR PLOW-BEAMS.

SPECIFICATION forming part of Letters Patent No. 253,407, dated February'7, 1882.

- Application filed December 20, 1881. (No model.)

To all whom it may concern Be it known that I, JOHN A. MONEAL, acitithus allowing a lighter or weaker beam, or one of softer wood, to beused when desired. I

attain this object by the mechanism illustrated in the accompanyingdrawings, in which Figure 1 is a side view of the plow-beam with oneform of the strengthening-clamp applied. Fig. 2 is a bottom view of thesame.

Figs. 3 and 4 are enlarged views of the crossbars. Figs. 5 and 6 showthe clamp formed of an entire rod running the whole length of the beamon both sides. Figs. 7 and 8 show the same form of clamp applied to aplow having lugs or bearings formed on the standard to receive the rod.

' Similar letters refer to similar parts throughout the several views.

A represents an ordinary wooden plow-beam B, a clevis; and G, Figs. 7and 8, astandard.

D is a plate applied to the front end of the beam and grooved to receivethe front loop or portion, E, of theclamp, the rear portion, E, beingalso held to the beam by a grooved plate, F, having spurs F or othersuitable securing devices.

G G are bars resting against the under side of the beam for the rod ofthe clamp to bear against when under strain. Fig. 4 shows the bar Genlarged, with notches or bearings for the rods.

H H are cross-bars, into which the ends of the rod may be passed, asinFig. 3; or the bars may be perforated with a hole at each end for thepassage of the rods; or two pieces may be bolted or clamped to make onesolid perforated bar; or the rods may be secured in place many otherconvenient way.

I is a screw-rod swiveled in one of the crossbars, its threaded endengaging with the other, the angular head or block 1 serving to turn thescrew-rod by means of a wrench or otherwise.

The rod may be flattened for that purpose, or any other convenient meansmay be employed to secure a gripe or leverage.

1', Figs. 5, 6, 7, and 8, shows the tighteningscrew and bar at the rearend of the beam; and E, a continuous straining-rod, running both sidesof the beam, in which case one or more cross-bars are employed, as at GG, Figs. 5 and 6.

In case the plow is manufactured with a view to use the clamp, lugs orbearings, as at KK,

Figs. 7 and 8, are formed upon the standard to receive the strain of therods instead of the cross-bars.

Either form of clamp herein shown may be used, according to the kind ofplow to which it is to be applied; and it is evident that variouschanges may be made in detail without aifectin g the scope of myinvention.

In operation my strengthening-clamp is intended to be used upon oldhalf-worn plows as well as upon new, and it is not intended to interferewith the ordinary attachments of the plow. For example, there-enforcingplate D (when the clamp is not applied to the bare wood) is fitted uponthe end of the beam, either with flanges, as at L L, Figs. 1 and 5, orwith teats or spurs, as at L, Fig. 7, and, being of the same size as thebeam, the clevis passes over it 'read-' ily. Plates may also be appliedto the rear end of the beam. The standard, the colter, and thegage-wheel attachment will not be interfered with in the application ofthe clamp as described. In case the beam is attached by a .mortise tothe handle, or in any of the ordinary ways, the long bent rod E, asseenin Figs. 5, 6, 7, and 8, passes outside ofeverything, and isstrained by a bar and screw on the end of the beam; or the bar may beplaced above the projectin g portion of the beam against the handle orthe rod may pass above and over the beam, as at F, Fig. 1, and the plateat F may be strained from the end of the beam by means of a threadedextension or rod and nut, or by other convenient means.

Havingdescribedmyinvention,whatIelaim, and desire to secure by LettersPatent, is

1. A strengthening-clamp for plow-beams, constructed substantially asdescribed, combinin g a straining-rod, a tightening device, and bearingsfor the rod, and adapted to be applied to and removed from theplow-beam, as set forth.

2. The combination, with a plow-beam, of a strengthening-clamp composedof a strainingrod, a tightening device, and bearings for the rod,substantially as described, whereby the beam may be re-enforcedtemporarily or permanently, as desired, Without interfering with thestandard or attachments of the plow.

3. The combination, with the plow-beam straining-rod, tightening device,and bearings, of a grooved metallic plate or plates applied at or nearthe end of the beam, substantially as described.

4. A strengtheningblamp for p1ow-bean1s composed of a U-shapedstraiuingrod adapted to run each side of the plow-beam, a tighten- JOHNA. MONEAL.

Witnesses:

J. T. GORMLEY, S. BERWANGER.

